Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “key”

key

noun [C]
 
 
/kiː/
IT any of the set of moving parts that you press with your fingers on a computer, etc. to produce letters, numbers, or symbols: Press any key to continue.
GRAPHS & CHARTS a list of the symbols used in a map, chart, or book with explanations of what they mean: For an explanation of these symbols, see key below.
the key (to sth) the best or only way to achieve something: The key is to prioritize your work, and to keep to your schedule. Hard work is the key to success. A focus on training is often the key to unlocking potential.
→ See also Alt key, arrow key, control key, escape, hot key, scroll key, shift key
(Definition of key noun from the Cambridge Business English Dictionary © Cambridge University Press)
What is the pronunciation of key?
Add Cambridge dictionaries to your browser to your website

Definitions of “key” in other dictionaries

Word of the Day

dawn on sb

If a fact dawns on you, you understand it after a period of not understanding it.

Word of the Day

The language of work

by Kate Woodford,
October 15, 2014
Most of us talk about our jobs. We tell our family and friends interesting or funny things that have happened in the workplace (=room where we do our job), we describe – and sometimes complain about – our bosses and colleagues and when we meet someone for the first time, we tell

Read More 

life tracking noun

October 20, 2014
the use of one or more devices or apps to monitor health, exercise, how time is spent, etc.

Read More